US3410345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam generation with high tds feedwater for thermal flooding of subterranean oil reservoirs
Assignee: ChampionX LLC
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Filing: 1966-03-24
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Granted: 1968-11-12
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Expires: 1986-03-24
Abstract
No abstract record available.
Inventors
- 👤 Fradkin Arthur Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:14
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; C; C09; C09K; C09K8/00; C09K8/58; C09K8/592
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2980607A
Cited
US3193009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |